43
That are connected with 64, 128, 256, 512, 1024 and 4096 = 64
2
(Modular equations and approximations to π - S. Ramanujan - Quarterly Journal of
Mathematics, XLV, 1914, 350 – 372)
All the results of the most important connections are signed in blue throughout the
drafting of the paper. We highlight as in the development of the various equations we
use always the constants π, ϕ, 1/ϕ, the Fibonacci and Lucas numbers, linked to the
golden ratio, that play a fundamental role in the development, and therefore, in the
final results of the analyzed expressions.
In mathematics, the Fibonacci numbers, commonly denoted F
n
, form a sequence,
called the Fibonacci sequence, such that each number is the sum of the two preceding
ones, starting from 0 and 1. Fibonacci numbers are strongly related to the golden
ratio: Binet's formula expresses the nth Fibonacci number in terms of n and the
golden ratio, and implies that the ratio of two consecutive Fibonacci numbers tends
to the golden ratio as n increases.
Fibonacci numbers are also closely related to Lucas numbers ,in that the Fibonacci
and Lucas numbers form a complementary pair of Lucas sequences
The beginning of the sequence is thus:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765,
10946, 17711, 28657, 46368, 75025, 121393, 196418, 317811, 514229, 832040,
1346269, 2178309, 3524578, 5702887, 9227465, 14930352, 24157817, 39088169,
63245986, 102334155...
The Lucas numbers or Lucas series are an integer sequence named after the
mathematician François Édouard Anatole Lucas (1842–91), who studied both that
sequence and the closely related Fibonacci numbers. Lucas numbers and Fibonacci
numbers form complementary instances of Lucas sequences.
The Lucas sequence has the same recursive relationship as the Fibonacci sequence,
where each term is the sum of the two previous terms, but with different starting
values. This produces a sequence where the ratios of successive terms approach
the golden ratio, and in fact the terms themselves are roundings of integer powers of
the golden ratio.
[1]
The sequence also has a variety of relationships with the
Fibonacci numbers, like the fact that adding any two Fibonacci numbers two terms
apart in the Fibonacci sequence results in the Lucas number in between.